J1A1H XXL Torque Monster Buildup........

[JoeGuam]

I thought i would work out the final possible weight of my truck with different combo wheels and batteries and bodies.
The weight in lbs are at the bottom.

For road:
Fibre Glass body 2.1lbs!!!!!!
Spi Rims 2.9lbs
6500mah hyperion batteries 2.5lbs!!!!!!!
Truck 9.5lbs
= 17lbs!!!!!!!! OH MY GOD! The batteries and the body are so heavy!!! Think i will just keep the body as a shelf queen!

Grass and bashing
Plastic body ??? not sure yet
HPI tires and proline rims 2.2lbs
3700mah batteries. 1.4lbs
Truck 9.5lbs
= a more respectable 13.1 lbs +plastic body

with the large batteries 2.5lbs
= 14.2lbs Those batteries are killing my weight! they better pay off by giving me great run times!

Without the fibreglass body and using the large batteries and lighter wheels the weight isnt too bad for such a large truck.

I doubt the fibreglass body is ever going to get any use now... keep it as a shelf queen

Unless you are going to race professionaly, I wouldn't be too worried about the weight. At least you know it will plow through the competition. Before the "Ready, set, GO" punch it and run the other trucks over. LOL. Josh it's fine as long as your happy with the truck and having fun, then it is all the counts! I have (1) XL axles but not as set.

 

[frddyj]

Unless you are going to race professionaly, I wouldn't be too worried about the weight.

If he's pushing a 17# truck vs. a 13# truck, don't you think the additional 4# would cause the motor to work harder to move the heavier load resulting in heat?

IMO you should be very concerned about the weight of the truck in relation to how you have it geared.

i will weigh my truck within the hour, but i beleve it to be appx 4 lb lighter and geared much lower.

 

[J1A1H]

Unless you are going to race professionaly, I wouldn't be too worried about the weight. At least you know it will plow through the competition. Before the "Ready, set, GO" punch it and run the other trucks over. LOL. Josh it's fine as long as your happy with the truck and having fun, then it is all the counts! I have (1) XL axles but not as set.

Thanks a lot Joe! Really do appreciate it! I originally wanted to make a very stable fast truck... Looks like its not going to be possible... Other people on other forums have said that the only way would be to run 10s on a 1000kv engine. BUT NO WAY am i going to increase the weight of this truck. How ever once i start building my second lightweight basher, i will be very tempted to take this motor 1600kv motor and put it in the new carbon truck and put two torq2200 motors and 2 ESC and run two sets of 6s as a bit of a joke. See if my tranny will be able to hold up 🙂

Frddy i am very concerned about the weight... and depending how i am running the truck will effect what kind of gearing i run too.

As i said before, i will attempt to run a 17t clutch bell/44spur and 39t idler, and see how my temps fair.

I may be running higher gearing that you frdy but my motor is also rated at a much lower kv....

So these are my CURRENT performance figures vs yours....
me with 21t/44/39 neu 1600kv

Differential Ratio: 3.2222222222222223
Transmission Ratio: 1.5366847826086956
Other Ratio: 1
Spur Tooth Count: 44
Pinion Tooth Count: 21
Total Voltage: 22.2
Motor KV: 1600
Tire Diameter (inches): 5.5
Tire Ballooning (inches): 0.5
Spur/Pinion Ratio: 2.1 : 1
Total Ratio: 10.37465 : 1
Tire Cir***ference (inches): 20.42 inches (518.68 mm)
Rollout: 1.97:1
Total Motor Speed: 35520 RPM
Vehicle Speed: 66.21 mph (106.35 km/h)

YOURS if i remember correctly
19/44/39 torq 2200kv

Differential Ratio: 3.2222222222222223
Transmission Ratio: 1.5366847826086956
Other Ratio: 1
Spur Tooth Count: 45
Pinion Tooth Count: 19
Total Voltage: 22.2
Motor KV: 2200
Tire Diameter (inches): 5.5
Tire Ballooning (inches): 0.5
Spur/Pinion Ratio: 2.37 : 1
Total Ratio: 11.72733 : 1
Tire Cir***ference (inches): 20.42 inches (518.68 mm)
Rollout: 1.74:1
Total Motor Speed: 48840 RPM
Vehicle Speed: 80.53 mph (129.36 km/h)

The difference in potential top speed is extremely huge and all just because of the motor.
My neu is much more efficient and considering my truck is roughly 13-14lbs it should easily be able to run my truck with no heating issues at all with this gearing.
Being more effcient and also slower rotating it shouldnt draw as many amps from the ESC... This is how i thought it would have worked... If anything your truck is geared too high for your motor?
Please help me understand this... I thought this motor would have benefited me, and now it seems it just killing what i was trying to achieve.

But i do love the torque🙂 with the high speedidler and the 21t pinion, i was still wheeling this long wheel base at high speeds 🙂

 

[JoeGuam]

What kind of lipos you running? Pretty sure you will figure it out smart guy.

 

[JoeGuam]

If he's pushing a 17# truck vs. a 13# truck, don't you think the additional 4# would cause the motor to work harder to move the heavier load resulting in heat?

IMO you should be very concerned about the weight of the truck in relation to how you have it geared.

i will weigh my truck within the hour, but i beleve it to be appx 4 lb lighter and geared much lower.

If you are looking to beat every truck out there, then yes common sense lighter is faster.

 

[J1A1H]

due to the size... i am only running 6s from now on joe. i have just sent Dan from kershaw an email regarding a motor mount for twin motors for the torq2200...

In the end joe... if i have to gear down to maintain temps, it doesnt bother me too much as long as i am getting reliable and worry free bashing time. I just didnt want to lose too much of my top end as this thing is soooo stable at speed with the wide spi rims and long wheel base.

 

[frddyj]

If you are looking to beat every truck out there, then yes common sense lighter is faster.

we werent talking about speed and beating other trucks here nor lighter vs faster.

we were talking about how vehicle weight and gearing relates to Temps :resp:

 

[J1A1H]

frddy any news on the weight of your truck??? Yours must be around 11-12# to handle the high gearing and maintain decent temps...

 

[J1A1H]

wing mount on and rush battery box mounted that house my reciever
THANKS JASON!!! Quality products!

 

[JoeGuam]

3700mah 3s lipos

3700mah batteries. 1.4lbs

I agree the truck weight and gearing can result in higher temps. What temps were you getting. When I touch the motor by hand I think it is hot but when I use a temp gun it is only 130-155 degree which are good. Wondering what batteries with the kv1600 were you using to reference high temps.

 

[JoeGuam]

Is the wheelie support cut and if so what benefit does that have?

 

[J1A1H]

yep those 3700mah batts were the ones i were using to test... I have only run the truck 5 mins and didnt have my temp gun on me at the time. I will have to see what temps i get on a decent run. I just didnt want to push the truck without having a way of monitoring it accurately.

Yes the supports are damaged. NOT CUT, it was a very big jump that caused that haha
A new wheelie bar will be needed. If you get tired of soljas wheelie bar when he sends it to you... you can send it my way 🙂

 

[JoeGuam]

IMO those batteries were not feeding the motor the watts (power) that the motor it is rated to operate normally= high temps. You need sufficient amps x cell voltage for that motor.

 

[J1A1H]

they are 35c batts which should be suitable. I haven't used my large hyperions yet because i don't have the charging adaptor for them. Should get it by the end of next week....

 

[JoeGuam]

Is it a true 35C? Make a bet the hyperion batteries will not produce as much heat with the same time you ran those other batteries.

 

[J1A1H]

yes they are... They are very good batteries bought for £70 each! same price as hyperions. Very reputable LiPo dealer! i will keep everyone updated once i test the hyperions out too

 

[Bankrupter]

If they are still high... i may have to throw out the high speed idler and re gear accordingly.

this truck is lighter that someone running a stock flux with Big Joes! So its not that heavy!

.

OK I have to comment here, that is not near big joe weights with plastic rims. I had big joe 40's on wabash 23mm rims. They didnt add too much over the weight of badlands.

We weighed those rims against my set up. Both shod with badlands. The alloy rims came in a 4 lbs heaver... ***that's just the rims*** mine were 2.2 his were 6N' change. People are saying, "they are not heavy" around here(HPISF). This is pure BS, they are and all on the drive line!

We weighed them just to know... Not to hurt the sales of them! All the people pushing them saying "they are not heavy", we could not understand. The scale told the story.

Those 6500 packs fred has both are over 1 lb a pop. So that alone is 6lb's plus then add truck. You are asking for fire. This is not near the weight of the stock flux. Stock flux is not heavy at all....

People are reporting that shell you are using to be 2 Lbs as well. 8 lbs over weight as I see it.

Id keep my mouth shut but I see the investment here. This is not to rib you in anyway! (*** I am known to do this about heavy trucks***) I am concerned about you burning up your new gear!

I am happy you are watching temps close. Please do so and report back honestly. This is the only way to help others with gear/motor combos that are unknown. This is good data for the forum! But over all I want to see you not smoke a esc ...

 

[J1A1H]

Bank i have taken everything you have said on board... i guess i have learned my mistake the expensive way. I really thought i could build a large performance truck... This is obviously not the case.
Thanks for looking out for my investment bank... the last thing i want to is to blow anything!

I will just enjoy what i have and gear accordingly... I have enough spare parts for another flux so i think my next build will be done properly and kept lightweight. Ive got my eyes on the PRC Ext TVPs 🙂

Anyway i will be gearing for 50mph on 6s which should easily keep my temps down even if i decide to run the heavy spis. BUT although the spis are a little heavier than stock... they do improve handling amazingly! Maybe not worth the extra weight though.

I needed someone to pull me out of thinking that this truck could do 60+mph and weigh 15lbs + I didnt realise how much a couple of lbs could effect the motor and esc....

I would say thank you again... but i feel i am overusing it 🙂

 

[J1A1H]

Little update to solve my heating issues...

I have just bought an 18t pinion and 47spur... will be running this combo with the high speed idler gear which should give me around 55mph on 6s rated at 4.2v per cell.
When bashing in the woods, i will use the stock drive gear ratio which will bring my top speed down to 40mph. Shouldnt be over geared or under geared i hope.Only time will tell.
Pics of my new body will be up by this afternoon.

Thanks bank for pointing in the right direction. Fibreglass body is now my shelf queen and my desertrat body will be everything else 🙂

 

[frddyj]

@ Bankrupter - Good points and well said. This is the point i was trying to make back a few posts.


You need be very concerned about your weights & load heavier load on a electric motor makes more work & heat. period. this holds true for a savage, electric drill,electric cement mixer, egg beater, etc.

@ Josh- before you go crazy changing things, try going to stock gearing & keep everything else the same: 20/44/44 -- (especially get that 39t idler outta there) and see how she goes. I bet she cools down substantially.

 

[J1A1H]

will do frddy!!! i would be out right now testing it... Its funny how i have spare parts for nearly everything on the savage... and the one thing i lose (wheel nut) is the only thing i don't have spares! should be here by monday hopefully

 

[J1A1H]

Just finished my new body... Its a desert rat for a slayer...
For my first every paint job, i am very happy. I went overboard with the monster energy stickers but I'm loving it and i doubt the condition will look this good after the first run

here you go.... Pictures arent great but you get the idea....

What do you think???

 

[Pope]

Very nice job.

 

[Bankrupter]

wow, I love it ! Make that the queen lol jk jk.

Josh, I do want you to push it. I just want you temping all runs till you know. I have no clue how that motor is going to react. I'm not even pretending to... I just don't want to see you smoke it as much as you don't want to ... I only came in with the weights I knew, caz you said its not much more then stock. I was afraid you were going to do it in b4 I see that pig 10+ feet in the air...

 

[Shaun]

Awsome lid,great job on the paint my friend.....

 

[J1A1H]

Thanks for all the compliments....

@BANK - lol it does actually look 100 times better than the fibreglass lid lol when i have time ill def do another one...

PIG haha I appreciate the concern and would definitely look out for someone who is probably going to make a mistake somewhere...

Ill let the new gearing and temps do the talking... At leaset i had the sense to stop running immediately the first time when i thought something was up...... Its just a shame i didnt have my temp gun with me at the time... but with common sense (rip lol) you can tell just by touch if something is running too hot for its own good.

 

[MikeK1981]

That body looks sick my friend! Good work.

 

[frddyj]

that body kicks butt Josh :jamout:

 

[J1A1H]

cheers buddy!

just sent my donation in for the raffle 🙂 I'm feeling lucky!!! Come on carbon tvps! then second build will be under way!

 

[J1A1H]

there needs to be an edit button