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> The Doc's tranny waggin'
Dr Evil
post Jul 28 2012, 05:26 PM
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Consider this, there will be 1/4" x 6 being fed by 1/2" and then feeding 1/2". There should be plenty of flow with lots of exposure between medium and heat source.
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tscrihfield
post Jul 28 2012, 07:49 PM
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Very cool! Let us know how well that works. It seems like a good idea...

Thomas

QUOTE(Dr Evil @ Jul 28 2012, 10:10 AM) *

QUOTE(bfrymire @ Jul 28 2012, 02:52 AM) *

QUOTE(tscrihfield @ Jul 27 2012, 10:56 PM) *

Doc,
What are the tubes for? I was thinking cooling, but that would be difficult with exhaust temps since you couldn't stop the coolant from boiling.

That said whats they fer?

Thomas



Heater?

Yup (IMG:style_emoticons/default/smile.gif) I will be wrapping the headers in 1/4"OD copper tubing that will eventually terminate to 1/2" ID heater hose for transport forward to a heater core. I have a stand alone water pump already. I dont plan on finishing this design before I am driving the bus, but I wanted to see if I could get the header part done before I put them on so I didnt have to take them off again later for this.
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Dr Evil
post Jul 28 2012, 09:28 PM
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Design on the throttle assembly is progressing well. Lots of stuff needing to be designed around. Probably finish this up tomorrow.
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Dr Evil
post Jul 28 2012, 11:31 PM
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Some more theory on the heater setup.

Approx V of the capillary system = 2.3L

Approx V of send and return lines = 3.7L

38% of known volume exposed to heat at any moment.

Volume of the core is yet unknown.
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Dr Evil
post Jul 29 2012, 11:02 AM
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Sometimes I get a feeling of Zen when working on the bus. Since I am creating things the did not exists in the form I needed them it, it often feels like I am actually discovering a design that existed, but I just had to see where it was and make it.

I particularly got this feeling with the mounting of the thermotimeswitch and last night with the throttle assembly. One bolt goes to a hole already in the throttle body, the base plate keeps it from rotating. The needs of the design were satisfied by a simple piece of 1/4" steel that was drilled, tapped, and notched. Not fancy, but perfect.



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Dr Evil
post Jul 29 2012, 12:55 PM
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Yet more of pulling designs from the ether. Lower throttle assembly.


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scotty b
post Jul 29 2012, 01:54 PM
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rust free you say ?
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Izit running yet ? (IMG:style_emoticons/default/confused24.gif)











(IMG:style_emoticons/default/poke.gif)
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Dr Evil
post Jul 29 2012, 07:36 PM
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Well, here come the excuses, my Suby stole 1.5 days from me this weekend (IMG:style_emoticons/default/dry.gif) Then, while working on it today some guys approached and asked if I could do some work on their 75 CB360.

The throttle is almost perfect. The ratio is off and the TB is not opening all of the way so I need to recalculate that. If that goes well, I will address this tomorrow, install the tins, wiring, turn the key and :bomb:

Nice little bike (IMG:style_emoticons/default/smile.gif)




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BajaXJ92
post Jul 29 2012, 08:37 PM
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I was also curious as to how you were going to work out the copper wire/header expansion and the gap, and also the flow. Looks like you've got it worked out. (IMG:style_emoticons/default/beerchug.gif)

Can't wait to see/hear it running. (IMG:style_emoticons/default/first.gif)
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Dr Evil
post Jul 30 2012, 08:33 PM
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Damn it (IMG:style_emoticons/default/headbang.gif) Damn it (IMG:style_emoticons/default/headbang.gif) Damn it (IMG:style_emoticons/default/headbang.gif)

Spent another few hours on the damn throttle cable design. I changed some parameters, welded up the throttle linkage off of the throttle body to allow for more adjustment in position of where the cable hooks in, and after all of that........the damn thing still does not function correctly. It will not open all the way until pushed by hand, the pedal feels real bad, then it wont close all the way. The weak link, after all the adjustments have been done? The cable from the tranz to the TB. I tried to use a bicycle brake cable, it is not going to work as there is no teflon lining and it is not built for this application. So, I need to either locate a cable that will work, or start to fabricate another rod control system like the one that worked so well on the last setup (IMG:style_emoticons/default/dry.gif)

Not working on it tomorrow or wed, but Thurs through the weekend should be productive now that I know what is going on.
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scotty b
post Jul 30 2012, 09:01 PM
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rust free you say ?
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Li'l Monty is counting on ya Doc (IMG:style_emoticons/default/first.gif)
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Dr Evil
post Jul 30 2012, 09:12 PM
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(IMG:style_emoticons/default/sad2.gif)
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bulitt
post Jul 31 2012, 06:12 AM
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Wait, what...bicycle brake cable for your throttle linkage?
Your gonna be a Dad! You have to start taking the safe course through life now.
You don't want a sticking throttle cable. Spend some of those Doctor Dollars!
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Dr Evil
post Aug 1 2012, 06:33 AM
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Working on sourcing some motorcycle throttle and clutch cables. These should be more up to the task. I cant believe the others failed so badly.
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scotty b
post Aug 1 2012, 06:49 AM
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(IMG:style_emoticons/default/blink.gif) (IMG:style_emoticons/default/WTF.gif) RTV much ?


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rick 918-S
post Aug 1 2012, 07:40 AM
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Hey nice rack! -Celette
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QUOTE(scotty b @ Aug 1 2012, 07:49 AM) *

(IMG:style_emoticons/default/blink.gif) (IMG:style_emoticons/default/WTF.gif) RTV much ?


No safety wire on those bolts? (IMG:style_emoticons/default/poke.gif) (IMG:style_emoticons/default/happy11.gif) Gitterdone (IMG:style_emoticons/default/popcorn[1].gif)
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Dr Evil
post Aug 3 2012, 09:50 PM
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OK, I met a local guy, my age, that has a sweet collection of parts and vintage bikes to include BSA, Ducati, Honda. He gave me some cables to try and one was perfect. I spent some hours futzing with trying to get the measurements correct....this did not work. What I ended up doing was putting another return spring on the transmission arm, and bending the stop on the gas pedal so that I could get more movement. This worked to solve all problems (IMG:style_emoticons/default/smile.gif) Tomorrow looks to be a day for completion and hopefuly some triumph.
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hot_shoe914
post Aug 3 2012, 09:56 PM
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QUOTE
some triumph.

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speed metal army
post Aug 3 2012, 10:06 PM
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Waiting for the rain to stop...
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Another(smaller) Triumph (IMG:style_emoticons/default/smile.gif)
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Dr Evil
post Aug 3 2012, 10:08 PM
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Wrong thread bozos.
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