80 Turn Motor Test Results - LRP Truck Puller 2

[kevinlongisland]

I guess this writeup will only get some of you frustrated, considering you can't get these motors in the good old US of A. But I thought I would post up my findings anyway.

I was finally able to install and test the LRP Truck Puller 2 12 volt motors I got from a good customer of mine in Germany over a year ago. LRP does not list the turns and winds of this motor on their website, but I was able to find one source that says 80 turns. Also, these motors are just slightly longer than a 55t Integy Lathe motor. They would fit fine in a regular 4 link. I had to bend one link slightly on my stick truck for clearance.

Link to LRP spec sheet:
http://lrp-electronic.de/e/lis/

I installed these in my stick chassis truck running 9 tooth pinions, proline 40 series Moabs and a 9 cell battery pack. Before I even put the truck on the ground it was very noticeable how slow the axle shafts where turning. Once the wheels where on and the truck placed on the ground, I immediately noticed my slowest speed (barely applying any throttle) was much much slower. These motors definitely make your rig a "crawler". Out on the rocks the additional torque was evident. When the wheels would normally get really jammed up, the truck just torqued right out of it.

The downside to these motors, much less wheel speed compared to a 55t Integy lathe motor. This made it difficult to stop rollovers. Overall I like these motors and think they will have a proper application. I'll probably swap these motors out of my truck and put some regular Integy Lathe motors in there. I don't mind beating up the integy motors and I want to try the 65t motors. I'll update this thread if I put these in another truck for testing. I'd like to see how they work in a shafty rig.

 

[666]

Sweet! Are you going to sell these? That is a thundertech steering setup, right?

 

[jwrape]

With that much torque you could probably put a higher pinion on it and get the best of both worlds. HIGH torque and some speed as well. I know you don't want speed always but I like my crawlers to be versitle. That's why I used a EMaxx 2 speed because I like to use my crawlers a little fast on the street and then when I hit the rocks I gear down.:mrgreen:

 

[James Luce]

80t?

 

[James Luce]

I thought 55t was alot. this sucker mush have a lot of tourqu

 

[JohnRobHolmes]

slow even with a 9 cell pack eh? I bet it has some grunt though. What was the runtime?

 

[kevinlongisland]

Sweet! Are you going to sell these? That is a thundertech steering setup, right?

I may try to get my hands on some to sell. But as far as I know they are not for sale in the USA and I'm not sure why. Yes, that is the thunder tech behind the axle steering setup on my unlimited comp rig. They work great and the carbon fiber looks sweet!

jwrape, you are correct. I'd like to run some larger pinions and see how it works. Maybe even 13 tooth pinions. This could be a good option of motor to avoid buying pinions and adjustable motor mounts.

johnrobholmes, run times are awesome. Another advantage to these motors. With the 9t pinions, even when the battery was dying it kept going. I probably ran my battery down too much, but it kept crawling well after I noticed the servos slowing down. So the power draw is really low. These motors with a low pinion gear are probably a good option for the backyard basher that wants long run times. But probably not a good option for most competition settings.

 

[Trike Kid]

With that much torque you could probably put a higher pinion on it and get the best of both worlds. HIGH torque and some speed as well. I know you don't want speed always but I like my crawlers to be versitle. That's why I used a EMaxx 2 speed because I like to use my crawlers a little fast on the street and then when I hit the rocks I gear down.:mrgreen:

80t?

HOLLY

Crap

I thought 55t was alot. this sucker mush have a lot of tourqu

That took 4 posts why? Either use the edit button or get it right the first time you waste of oxygen.

80T just brings the terms "axle" and "snap" together in my mind for some strange reason :lol:
I'm thinking you could deffinately up your pinion some and still have plenty of torque to crawl with and have the wheel speed you want, or possibly even more than an Integy. This could be the perfect excuse to go lipo in a crawler to get some speed back.

 

[neo]

I live in the UK and the problem is the reverse here. Its alot easier to get hold of the Truck Puller than it is to find lathe motors. I have a couple of Truck Pullers at the moment. One is in my TLT.

I agree with the gearing up as its not the quickest motor should you ever need some speed.

 

[bigflex]

I live in the UK and the problem is the reverse here. Its alot easier to get hold of the Truck Puller than it is to find lathe motors. I have a couple of Truck Pullers at the moment. One is in my TLT.

I agree with the gearing up as its not the quickest motor should you ever need some speed.

im sure if you wanted some lathes there are some guys on here that would be willing to work something out for some of thoes pullers:lol:

 

[neo]

im sure if you wanted some lathes there are some guys on here that would be willing to work something out for some of thoes pullers:lol:

I would be more than willing to help. But the biggest problem is the darn exchange rate. They are currently selling where I get them from for £25 and going by an average exchange rate it works out to be $43. ex postage which again this darn UK country charges over the top for.

Actually after typing that, i feel like moving over to you guys:mrgreen:

It still works out cheaper for me to buy a lathe motor in the USA and have it shipped to me.

I would therfore use the truck puller as a last resort solution if I cant get hold of a Lathe motor.

 

[savage from the north]

But with 6 cells,which most use,it is weak.