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Post by AJR on Jul 15, 2020 16:50:28 GMT -7
Well Dave,......I'm building a 4gear unlimited and seems to me you need a partner so, let's dance.
It looks like we are going to have enough 4gear Unlimited cars for a Class. I am going to wait till we get a little closer to the race before I set them up on the Sign Up sheet just to make sure all the cars will still be coming. |
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Post by AJR on Jul 15, 2020 17:53:33 GMT -7
Hey Jeff please put me in for 1 Inline Super Comp. I also ask for a Super Stock Inline Match race. Please put me in and challenger will accept. Thank You Eric |
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Post by dave632 on Jul 15, 2020 18:36:44 GMT -7
Well Dave,......I'm building a 4gear unlimited and seems to me you need a partner so, let's dance. Sounds good. I will be tearing into that one soon to see what's wrong. |
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Post by sjracer on Jul 15, 2020 19:08:20 GMT -7
Jeff, I'm yet to see anything that Dave built that is slow. Perhaps I can find a really low ohmed 4 gear motor so I'll have the advantage with metal gears. Not to Lou Holtz you but, I'm not so much trying to beat Dave as I'm just trying to be competitive. You know I'm always thrilled when you guys just let me run a few of my cars down the track.
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Post by AJR on Jul 16, 2020 7:05:37 GMT -7
Jeff, I'm yet to see anything that Dave built that is slow. Perhaps I can find a really low ohmed 4 gear motor so I'll have the advantage with metal gears. Not to Lou Holtz you but, I'm not so much trying to beat Dave as I'm just trying to be competitive. You know I'm always thrilled when you guys just let me run a few of my cars down the track. That is what you need to do.....find a low ohm arm. The gears will take it. |
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Post by sjracer on Jul 16, 2020 8:46:03 GMT -7
I have a few 4.6 retarded timing from Scgrig in my stash. I'm going to keep looking, I may have a one lower. I really don't have to win as Skillet said I don't want to grenade. You're looking to run high 3's, I'll be happy with low 5's. This is my 1st attempt that I plan on seeing through to completion.
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Post by AJR on Jul 16, 2020 15:09:36 GMT -7
I have a few 4.6 retarded timing from Scgrig in my stash. I'm going to keep looking I mat have a one lower. I really don't have to win as Skillet said I don't want to grenade. You're looking to run high 3's, I'll be happy with low 5's. This is my 1st attempt that I plan on seeing through to completion. If the arm with the retarded timing is for a Tjet or 3 gear it will be advanced timing for the 4 gear in case you didn't know that. It took a couple of seasons of trial and error to get close to the .3's. Low .5's would be doing really good especially for a first attempt. Hopefully I can help you to side step some of the problems that we had and get you there quicker. The arms that I am running in my cars are approx. 3.5ohm w/advanced timing. One has neos and the other has polys. The customer build I am currently doing is 2.2ohm w/timing but this is the first time I've run one that low. |
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Post by sjracer on Jul 16, 2020 16:55:24 GMT -7
Thank JJ, yes I am aware of the fact that retarded timing is advanced for a 4 gear. I'm trying to use the acronym KISS. My goal is to try and gather more than enough parts by the end of the month and not try and re-invent the wheel. I've reached out to just about everybody I know that has built one I can for see issues for me attempting to install and build the brass plate and rear pinion gears. Do you cut/sand away material so it will be perfectly level? Do ball bearings make a big difference on the rear axle? How about on the pinion? It doesn't have to be pretty just functional.
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Post by AJR on Jul 16, 2020 18:09:34 GMT -7
Thank JJ, yes I am aware of the fact that retarded timing is advanced for a 4 gear. I'm trying to use the acronym KISS. My goal is to try and gather more than enough parts by the end of the month and not try and re-invent the wheel. I've reached out to just about everybody I know that has built one I can for see issues with installing the brass plate and rear pinion gears. Do you cut/sand away material so it will be perfectly level? Do ball bearings make a big difference on the rear axle? How about on the pinion? It doesn't have to be pretty just functional. I figured you knew that but others may not. The brass plate and cluster set up is definitely not simple. It's delicate work yes, but I have built three of them and they have performed flawlessly. We will see if that continues through this race. The ball bearings just help true everything up anywhere you put them and make it smoother. |
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Post by dave632 on Jul 17, 2020 7:43:09 GMT -7
I plan on winding my own arm for the 4G. The one that's in it now seems tired. I have never found
much improvement with ball bearings. Even in the 100,000 rpm + Inline Unlimteds I found very little
if any improvement, which surprised me.
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Post by sjracer on Jul 17, 2020 8:12:29 GMT -7
Thanks Dave, that's very useful information. It just support my plan to KISS ( keep it simple stupid). Stupid being me of course. I think I'm getting into paralysis by analysis. Just plain over thinking everything.
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Post by skillet on Jul 17, 2020 12:24:03 GMT -7
What gauge wire you going with dave? My first attempt at the 4 gear cheech and chonged on me last night. Yep up in smoke. No biggie but it was my only low arm. I've been wanting to try and wind one ,so this is looking like a good time. Sam/Skillet
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Post by dave632 on Jul 17, 2020 16:54:12 GMT -7
I plan to use #32 .008 wire. Came in at about 1.5 ohm last time.
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Post by skillet on Jul 17, 2020 20:35:48 GMT -7
Copy that. I appreciate the info.
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Post by dave632 on Jul 18, 2020 8:21:36 GMT -7
I pulled the windings off of an old 15 ohm arm. Something like 380 turns of wire on
each segment. That's why it is done by machine. Winding by hand is a pain. I built a
Frankenstein motorized winding monster which is a help but still a pain to do.
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