Project Drop Loop Board Tracker. Maybe🤔

[DieselTech]

Well keep seeing all the cool bikes on the forum and elsewhere & figured it's time to start another build. Well here is what I got. Lmfao all you fellow motor bikers are thinking to yourself WTF!!! But this is going to be a long build, I think. Lmao it comes down to junkyard inventory & my wallet. The worksman wheels I want are $700 alone, so I'm a pinching my Penny's & my butt cheeks!!!

 

[DieselTech]

My question to you folks out there, what tubing thickness do you guys & gals feel is sufficient for making a frame from scratch. I'm talking 1" chromoly tubing & mild steel tubing for the main frame & 3/4" tubing for the rear wheel stays. I'm thinking .065" in Chromoly. I'm thinking. 080" on the mild steel. What your thoughts on thickness & material choice. Metal shop calling me 2mrow with prices on tubing.

 

[mark20]

Depends on the powerplant, obviously the thicker the better (in a lot of ways )

.120 is common in the motorcycle frame world, i would want to stick with at least .100 to have a safe cushion imho. you could go .80 for a lighter weight frame with a CG-style power plant (or a 3hp brings motor)

.120 is easier to weld due to the thickness, but harder to bend, and vice versa on the .stuff <.080.

Material choice depends on what you're looking for, 4130 is great for a rigid frame that handles awesome, but if overly stressed can crack rather than bend (but i doubt that will happen) vs a more mild steel that will dampen some of the vibration coming from the motor, but will be a weaker metal.

 

[DieselTech]

Depends on the powerplant, obviously the thicker the better (in a lot of ways )

.120 is common in the motorcycle frame world, i would want to stick with at least .100 to have a safe cushion imho. you could go .80 for a lighter weight frame with a CG-style power plant (or a 3hp brings motor)

.120 is easier to weld due to the thickness, but harder to bend, and vice versa on the .stuff <.080.

Material choice depends on what you're looking for, 4130 is great for a rigid frame that handles awesome, but if overly stressed can crack rather than bend (but i doubt that will happen) vs a more mild steel that will dampen some of the vibration coming from the motor, but will be a weaker metal.

Well I got a brand new 670 predator V-twin that I could put in it!!! I got a rigid mini chopper I built years ago out of .080" wall 3/4" chromoly tubing & that bike is almost 7ft long. It's like riding a leaf spring with a wheel at each end, it's got lots of flex. I'm planning on using a 212 predator stood straight up, will see what oiling issues I find. I know most motorcycles use .120 chromoly tubing but larger diameter. I'm betting I'm not going to like the price of any chromoly tubing. Lmao I got enough chromoly bikes to cut up thou, if I cant afford to build a frame from scratch. Thanks.

 

[mark20]

Well I got a brand new 670 predator V-twin that I could put in it!!! I got a rigid mini chopper I built years ago out of .080" wall 3/4" chromoly tubing & that bike is almost 7ft long. It's like riding a leaf spring with a wheel at each end, it's got lots of flex. I'm planning on using a 212 predator stood straight up, will see what oiling issues I find. I know most motorcycles use .120 chromoly tubing but larger diameter. I'm betting I'm not going to like the price of any chromoly tubing. Lmao I got enough chromoly bikes to cut up thou, if I cant afford to build a frame from scratch. Thanks.

Yeah, if you're going with the 670 id spend the extra on .120 chrome. Otherwise, you could use .080 if your on a budget with closer bracing. Most steel supply places give you a better premium if you buy the full stock (usually 12ft) rather than having to cut up stock.

 

[DieselTech]

Yeah, if you're going with the 670 id spend the extra on .120 chrome. Otherwise, you could use .080 if your on a budget with closer bracing.

No some day I'll do a 670 build on a bike build. But not this go around. I'm thinking .080" with some strategically placed gussets & triangulated placed tubing. Bulk of my money is going into the worksman drum brake wheels, with the rear wheel being a 3 or 5 speed internal gear hub.

 

[DieselTech]

Lmao I'm shooting for something like this bike. I watched this bike b4 it came to Mecum this year for sale. I'm planning doing my drive belt similar, except use a linked V-belt set up & use a whizzer wheel sheave.

 

[mark20]

Honeslty if your going with a belt drive id save the money and get a single speed rear hub.

ive seen someone on here take a go-kart clutch and just weld up a V-belt pulley to the outer drum. (Actually, here's a one made by max torque https://www.amazon.com/Max-Torque-V...cphy=9019592&hvtargid=pla-1624551091820&psc=1)
Heres is another one for a clogged belt https://www.gopowersports.com/max-t...m7ahUCBAne_Hk3Mi2srWIohBuOmR7rW0SjU4NK_vaz_a0

 

[darwin]

That horn coming off of the seat tube looks OEM and not sawed off. How did anyone cut off the top tube with that covering it? Never seen a frame horn[?] like that.

 

[DieselTech]

Honeslty if your going with a belt drive id save the money and get a single speed rear hub.

ive seen someone on here take a go-kart clutch and just weld up a V-belt pulley to the outer drum. (Actually, here's a one made by max torque https://www.amazon.com/Max-Torque-V...cphy=9019592&hvtargid=pla-1624551091820&psc=1)
Heres is another one for a clogged belt https://www.gopowersports.com/max-t...m7ahUCBAne_Hk3Mi2srWIohBuOmR7rW0SjU4NK_vaz_a0

Yeah I'm looking at that v-belt clutch you posted. I just want a internal gear hub wheel in case my project takes a turn. I might change my mind & what a shifter bike. Lmao the rear wheel with IGH is a want, not a need. It's when you jump from the 3 speed to the 5speed hub is when the wheel really takes a price hike. So I prolly just get the 3 speed drum brake wheel. Debating on a stainless wheel ring or a double wall aluminum wheel rings in my choice of color.