LeMans LMP1: 200mm Pan Class Discussion
With the advent of the LM-1 and the LMA body, it's time there is place to discuss the rules, recommendations and enjoy the class.
I know the Winthrop Harbor crew are very close to putting up many class recommendations and I think there might even be a set of rules coming up. So far the class is shaking out to 21.5 Blinky, 200 mm with SpeedPassion foam tires for indoor and short tracks and 17.5 Blinky with foam tires for outdoor long tracks. There will be a minimum tire diameter rule to stop from truing the tires down to far. Along with the LMP1 style body it makes for some very nice looking cars. Owning a CRC GenX-LE, I can see how this car could be converted easily. it takes the upright, front axle, and king pin from the SpeedPassion LM-1 to convert the front end. Possibly less for other chassis as all you need is a 5 mm front axle. For the rear, the HPI F10 axle kit is a direct fit, if you can still find one. If only someone would just put out the IRS type ride height adjusters with the 10mm bearing cup! Then any metric 6 mm axle would slide right into a CRC, Speedmerchant, Associated.... :) I love the SpeedPower LMA body, very cool. Other similar bodies would be great. Seeing some of the nice liveries out there in the racing world will work so well with this body shape. |
Originally Posted by liljohn1064
(Post 12826140)
With the advent of the LM-1 and the LMA body, it's time there is place to discuss the rules, recommendations and enjoy the class.
I know the Winthrop Harbor crew are very close to putting up many class recommendations and I think there might even be a set of rules coming up. So far the class is shaking out to 21.5 Blinky, 200 mm with SpeedPassion foam tires for indoor and short tracks and 17.5 Blinky with foam tires for outdoor long tracks. There will be a minimum tire diameter rule to stop from truing the tires down to far. Along with the LMP1 style body it makes for some very nice looking cars. Owning a CRC GenX-LE, I can see how this car could be converted easily. it takes the upright, front axle, and king pin from the SpeedPassion LM-1 to convert the front end. Possibly less for other chassis as all you need is a 5 mm front axle. For the rear, the HPI F10 axle kit is a direct fit, if you can still find one. If only someone would just put out the IRS type ride height adjusters with the 10mm bearing cup! Then any metric 6 mm axle would slide right into a CRC, Speedmerchant, Associated.... :) I love the SpeedPower LMA body, very cool. Other similar bodies would be great. Seeing some of the nice liveries out there in the racing world will work so well with this body shape. Although this is the situation we find ourselves in, this really should be a rubber class vs foam. I guess what is available will have to work for now |
Originally Posted by robk
(Post 12826170)
Although this is the situation we find ourselves in, this really should be a rubber class vs foam. I guess what is available will have to work for now
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Originally Posted by liljohn1064
(Post 12826140)
If only someone would just put out the IRS type ride height adjusters with the 10mm bearing cup!
|
Originally Posted by howardcano
(Post 12826234)
Grab a 10mm drill and a pair of 10x6mm flanged bearings and have at it. It worked very nicely on my original HPI F1 car, and is quite simple to do.
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Originally Posted by liljohn1064
(Post 12826239)
Thanks for clearing my tunnel vision Howard. Very simple indeed.
You can also do something similar to go the other way (a 1/4" axle in an F1 car). |
Are we thinking about specifying a minimum/maximum rim diameter? I'm curious to see if I can use some 1/10 or 1/8 scale nitro wheels/tires, since they are very affordable (and I already have some!). The fronts are pretty easy to adapt; the rears might be a bit more of a challenge.
EDIT: for comparison, 1/8 scale rims are about 2.14" diameter, and 1/10 rims are about 2.00" diameter. |
Originally Posted by howardcano
(Post 12826311)
Are we thinking about specifying a minimum/maximum rim diameter? I'm curious to see if I can use some 1/10 or 1/8 scale nitro wheels/tires, since they are very affordable (and I already have some!). The fronts are pretty easy to adapt; the rears might be a bit more of a challenge.
EDIT: for comparison, 1/8 scale rims are about 2.14" diameter, and 1/10 rims are about 2.00" diameter. |
Seeing that people are thinking about Using a Gen-X 10 to do this, I will probably take that path. What is the battery config going to be? I never had to charge a receiver pack before. Not unless you count the receiver pack in my Frog that used four AA batteries. I guess that was before some of you guys were born.
I am interested, but I have to say I think the SP body is a bit odd looking. Saved only by the killer front end, canopy and awesome Light clusters. It looks like you can pack a ton of leds in there. |
Info from the web:
The real LMP1 tire has a maximum diameter of 28.5 inches and a max width of 16 inches. The real LMP2 tire has a maximum diameter of 23 inches and a max width of 14 inches. I didn't find any rules for minimum dimensions. EDIT: In practice, most cars seem to use 18" diameter rims. With the lip for the bead, that would be about 20" outside diameter. Here are the sizes used on some of the Lemans prototypes: Front: 33/65-18 (Diameter: 25.6", Tread Width: 13") Rear: 36/71-18 (Diameter: 28.0", Tread Width: 14") 1/10 scale nitro sedan rear (30mm wide) tires are a nearly perfect match for the front tires, 1/8 scale nitro front tires are a nearly perfect match for the rear tires! |
The new rules for LMP1 for 2014 are quite drastic. The cars have gone from 2000mm wide to a narrower 1900mm wide. Tire widths have also decreased from 16" wide to the new 14" width. So much for a 200mm rc class!
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Originally Posted by liljohn1064
(Post 12827024)
The push is to get this class on rubber ASAP and not have to worry about this tire and rim stuff.
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Originally Posted by snoopyrc
(Post 12827152)
Seeing that people are thinking about Using a Gen-X 10 to do this, I will probably take that path. What is the battery config going to be? I never had to charge a receiver pack before. Not unless you count the receiver pack in my Frog that used four AA batteries. I guess that was before some of you guys were born.
I am interested, but I have to say I think the SP body is a bit odd looking. Saved only by the killer front end, canopy and awesome Light clusters. It looks like you can pack a ton of leds in there. |
Originally Posted by howardcano
(Post 12827387)
I won't be pushing for that. I'd much prefer foams, with minimum diameter requirements.
I picked up two LM-1 with body kits from SpeedPowerRC.com for $200 each and 21.5/Reventon S combo for $79.00. That's a running car, a spare body and full set of spares for under $500. I didn't want to tear apart my WGT car just yet and having another model to work on is always a bonus. |
Originally Posted by fredswain
(Post 12827344)
The new rules for LMP1 for 2014 are quite drastic. The cars have gone from 2000mm wide to a narrower 1900mm wide. Tire widths have also decreased from 16" wide to the new 14" width. So much for a 200mm rc class!
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