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Post by AJR on Jan 6, 2018 14:17:56 GMT -7
Nosub the armature is 6ohm and the rear tire is .510. I did not have a smaller tire to fit that rim. The magnets are plenty strong, they are just way up in the chassis and sheathed in plastic. The car seems to make plenty of power. Eagle showed that with some minor modifications. It's hard for me to run a car with poly motor mags at low volts. Kinda defeats the purpose. If I cut the area under the traction magnets and drop them down, this car will fly down the track and I don't think I would need the wheelie bars anymore. I'm going to try a couple of things before I do that.
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Post by AJR on Jan 6, 2018 14:24:58 GMT -7
I am really surprised that the car did not 60' well. With the 2 TR chassis I tested the 60' time was excellent, hitting in the .05s. They also had no problem staying in the groove. Must have something to do with the larger rear tires. I found that the TRs flattened out about mid track until I added braid. What kind of speeds did you get out of it Jeff. Mine both hit 14 mph dead stock. Dave to be honest I forgot to even look at the MPH. I was focused on the 60'. This one winds out pretty well and seems to be topping out right before the speed trap. I think this DR chassis is beefier/bulkier than the TR chassis too. That's going to slow it down some. |
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Post by dave632 on Jan 6, 2018 14:30:23 GMT -7
Well did a little testing today on the DR1 chassis. From the box to the track 1.290, pretty darn slow for an inline. I ordered 3 so I ran another one and it ran an .832et, not bad. All runs were at 20volts. So I decided to work on the slow one. The pickups were a mess nasty edges and did not lay flat. So I filed off the edges and tweaked them for better contact. Best run was a .732et. Then I put a body on and it would not go down the track. So I glued one traction dot magnet to the chassis .703et with no body. Than a second traction dot magnet for a .692et. Then I added braid to the pickup shoes .603et. Next up 8 tooth pinion, bang .575et. I really like this chassis, lots of potential. Nice work Robert. You are the first to get into the .5s with this chassis. I think one of my chassis with braid ran in the low .60s. Without both ran in the mid .7s to low .8s. Seems this chassis is generating a lot of interest which is good for getting more racers involved in the future. |
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Post by Eagle Racing on Jan 8, 2018 20:19:12 GMT -7
Well did a little testing today on the DR1 chassis. From the box to the track 1.290, pretty darn slow for an inline. I ordered 3 so I ran another one and it ran an .832et, not bad. All runs were at 20volts. So I decided to work on the slow one. The pickups were a mess nasty edges and did not lay flat. So I filed off the edges and tweaked them for better contact. Best run was a .732et. Then I put a body on and it would not go down the track. So I glued one traction dot magnet to the chassis .703et with no body. Than a second traction dot magnet for a .692et. Then I added braid to the pickup shoes .603et. Next up 8 tooth pinion, bang .575et. I really like this chassis, lots of potential. Nice work Robert. You are the first to get into the .5s with this chassis. I think one of my chassis with braid ran in the low .60s. Without both ran in the mid .7s to low .8s. Seems this chassis is generating a lot of interest which is good for getting more racers involved in the future.
Here is a pic of the chassis as tested. |
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Post by dave632 on Jan 8, 2018 22:12:15 GMT -7
Nice going you sure have it flying now. You have got me wondering about some more mods to the TR3 chassis I now have. Might do some fooling with them.
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Post by ecbill on Jan 9, 2018 19:40:38 GMT -7
Nice work Robert. You are the first to get into the .5s with this chassis. I think one of my chassis with braid ran in the low .60s. Without both ran in the mid .7s to low .8s. Seems this chassis is generating a lot of interest which is good for getting more racers involved in the future.
Here is a pic of the chassis as tested.Eagle, You're really bringing the times down. Do the adjustable brush tubes make it necessary to leave the body clip off? I'm curious how these times compare to other inline chassis with 6 ohm motors. |
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Post by dave632 on Jan 10, 2018 10:12:56 GMT -7
These times are now are now rivaling some of the fastest stock production Inline chassis. Impressive.
It is inspiring me to fool with my TR chassis.
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Post by Eagle Racing on Jan 10, 2018 10:19:25 GMT -7
Thanks Dave, did some more testing today. This time I added adjustable brush tubes and a 20T crown gear. Here is a pic of the results.
Here is a pic of the chassis as tested. Eagle, You're really bringing the times down. Do the adjustable brush tubes make it necessary to leave the body clip off? I'm curious how these times compare to other inline chassis with 6 ohm motors. Yes it does, but that is not a problem. I would say this one is fast enough to run with other Super Stock in line cars. |
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Post by nosubfor3 on Jan 12, 2018 4:19:44 GMT -7
Here is an update on the chassis from JAGS.
The pick-up’s did not come out like we expected and we will be coming out with a newer version that is better quality and a little thicker.
We have just ordered new traction magnets that are 50% stronger.
Our next project is a larger pinion and smaller crown gears.
If you can think of anything else let me know and I’ll see what I can do.
Thank you,
Jim
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Post by yellerstang on Jan 12, 2018 7:41:47 GMT -7
I have one of the other chassis and it works very well. I would like to build something that is very fast off the line and winds out in the 1/8 mile.... can someone recommend what arm, gears, tires for this new chassis? I want to build it with the Cadillac 4 gear body. Thanks
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Post by dave632 on Jan 12, 2018 9:58:20 GMT -7
I thought the gearing was pretty good for the 1/8th mile as it flattened out right about there or a little before. The stock traction magnets and tires were also good. The stock tires were the best I have seen on any stock car. One thing that helped a lot was braid on the pickups as the stock pickups are not the best. A 2.5 arm should make for a pretty fast car. Robert has already got one of the new chassis into the low .5s which is pretty quick for a stock arm car. Outside of braid I have not tried any other improvements. I did get one into the low .6s with that alone.
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Post by dave632 on Jan 14, 2018 20:11:29 GMT -7
Did a gear change on one of my Jag Inline cars today. Picked up a bunch of MPH hitting 24 but the 60' & 330' suffered some. Ran a best ET of .570 which is not bad. Still need some work in the gear department as I don't think my ratio is quite right for 1000'. If this track was a 1/4 mile it would be OK as it is still accelerating at the finish. It blew by the stock geared Jag chassis after half track like it had put the brakes on.
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Post by dave632 on Jan 15, 2018 14:36:40 GMT -7
Did some more work on the TR chassis and got them running better. Both cars hit .54s with the faster one hitting a best speed of 23+ mph. At these speeds I had lots of trouble keeping the stock tires on the rims, including the front tires, even after gluing them on??? Put on some Super Tire .432 x 200 tires with double sided rims and this cured the problem and brought the ET down to the .54s. In my opinion I am ready for the Jag challenge if anyone is up to it. Robert still has the best ET for one of these chassis as my best was .541 but that is pretty close.  New Jag chassis after |
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Post by Eagle Racing on Jan 16, 2018 4:59:39 GMT -7
Nice work Dave, the TR3 and DR1 chassis both respond nicely to tuning.
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Post by dave632 on Jan 16, 2018 12:46:09 GMT -7
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