Tecumseh Throttle/Big Block Repro Q&A !!!!!!!!!!!!!!!!!
The only part that is ' no longer available' is the cable hold peice, #30199A. I was able to find all the other parts at only one place, landscapepower.com. Total cost, including shipping is $25.01. However, the parts are on a 15 day back order. I would not be surprised if I received an email from them within the next few days telling me some of the parts cannot be had. Its up to you Joe, the future of big block mini biking rests in your hands. (guilt trip) :huh:
Hello,
I taked to a few Tec parts sources today. Regarding parts availablity on the
H50-70 hook up parts. Most are not available ( I thought they were last time I checked), or long lead time with no promise date. As mentioned above.
So, I did talk with the person that did the cad drawings for me on the HS40 set up. He will draw them up so I can get them in front of the laser guy for pricing. I will be taking some pics tonight to load up, linking to this discussion.
I have a few options to offer to keep costs down that I will be asking for feedback on. We can go from there.
I'll be working on some of this next week while on vacation.
Regards, Joe
I taked to a few Tec parts sources today. Regarding parts availablity on the
H50-70 hook up parts. Most are not available ( I thought they were last time I checked), or long lead time with no promise date. As mentioned above.
So, I did talk with the person that did the cad drawings for me on the HS40 set up. He will draw them up so I can get them in front of the laser guy for pricing. I will be taking some pics tonight to load up, linking to this discussion.
I have a few options to offer to keep costs down that I will be asking for feedback on. We can go from there.
I'll be working on some of this next week while on vacation.
Regards, Joe
The issue is, Tecumseh suppliers are drawling on old inventory. When they say that rest of the pieces are available it means there are 6 setting in a warehouse in Topeka.
The only parts being made by "Tecumseh" or any aftermarket folks such as Oregon are commonly replaced part's.
Joe, your idea is outstanding.
The only parts being made by "Tecumseh" or any aftermarket folks such as Oregon are commonly replaced part's.
Joe, your idea is outstanding.
Hi Randy,
Thanks for your feedback. What you mention is spot on to what I was finding today. I was abit surprised. Just a few month's back I made notes what was available for the "Big Block" version by various suppliers when making the HS40 set up. Todays calls/questions to the same suppliers were totally different. I ordered some in stock Tecumseh H50-H70 return torsion springs. Should arrive next week. It appears that they are becoming scarce as well.
Best regards, Joe
Thanks for your feedback. What you mention is spot on to what I was finding today. I was abit surprised. Just a few month's back I made notes what was available for the "Big Block" version by various suppliers when making the HS40 set up. Todays calls/questions to the same suppliers were totally different. I ordered some in stock Tecumseh H50-H70 return torsion springs. Should arrive next week. It appears that they are becoming scarce as well.
Best regards, Joe
Here is a thread that may be of interest. Me and a few other guy's did this 2 or 3 years ago because there was daily questions here on OldMiniBikes about the H series throttle hook up's.
http://www.oldminibikes.com/forum/t...your-h40-h70-tecumseh-big-block-throttle.html
http://www.oldminibikes.com/forum/t...your-h40-h70-tecumseh-big-block-throttle.html
Here are some pics of the components.
The bushings,washer spacer and the 2 small levers won't be difficult.
My real question for all is regarding this main bracket.
The yellow areas specifically. You can see that the 3 round mounting holes are extruded to accept and "sink the mounting screws as well as keep it raised off the shroud. The lower mounting hole also serves as an anchor for the torsion spring end.
My question is how acurate should this be regarding the countersunk mounting holes and those 3 "v" shaped bends. Guessing these were for securing the metal cased throttle cables for fixed throttle settings on various pieces of equipment. Feedback appreciated.
The bushings,washer spacer and the 2 small levers won't be difficult.
My real question for all is regarding this main bracket.
The yellow areas specifically. You can see that the 3 round mounting holes are extruded to accept and "sink the mounting screws as well as keep it raised off the shroud. The lower mounting hole also serves as an anchor for the torsion spring end.
My question is how acurate should this be regarding the countersunk mounting holes and those 3 "v" shaped bends. Guessing these were for securing the metal cased throttle cables for fixed throttle settings on various pieces of equipment. Feedback appreciated.
Will this work for folks?
I can have the bracket made like the one in this photo ( borrowed from Randy). The cable screw hole would be extruded and tapped so nuts aren't needed. The other 3 holes would be flat. Not sunk. Which when I looked at further only keeps the lock washer below the plate surface.
For the back of the bracket I was thinking of providing 3 bushings close to the shape of the original bracket so that it would be spaced correctly and provide the torsion spring hold down. Here is an example of what I am thinking.
When I get back from vacation, I most likely will have a bunch of sets lasered. I also will try extruding some metal durring the week to see if I can get close to the original as well.
I can have the bracket made like the one in this photo ( borrowed from Randy). The cable screw hole would be extruded and tapped so nuts aren't needed. The other 3 holes would be flat. Not sunk. Which when I looked at further only keeps the lock washer below the plate surface.
For the back of the bracket I was thinking of providing 3 bushings close to the shape of the original bracket so that it would be spaced correctly and provide the torsion spring hold down. Here is an example of what I am thinking.
When I get back from vacation, I most likely will have a bunch of sets lasered. I also will try extruding some metal durring the week to see if I can get close to the original as well.
Just following your lead Gerry!
The key to the template for location will be the large "U" shaped slot. If folks line that up, they should be good to go regarding placement of the various parts.
What I really am looking for over the next week is if members are good with offering a flat large bracket with 3 bushings rather than extruding it like the original. It will function and mount in the 3 locations as well as being (spaced correctly). Off the shroud. The other 2 levers will be just like original with the correct mounting hardware.
Anyone interested please just provide feedback. Trying to keep costs down by this option.
Regards, Joe 51
The key to the template for location will be the large "U" shaped slot. If folks line that up, they should be good to go regarding placement of the various parts.
What I really am looking for over the next week is if members are good with offering a flat large bracket with 3 bushings rather than extruding it like the original. It will function and mount in the 3 locations as well as being (spaced correctly). Off the shroud. The other 2 levers will be just like original with the correct mounting hardware.
Anyone interested please just provide feedback. Trying to keep costs down by this option.
Regards, Joe 51
Spent some time today starting fixture 1 of 2 to hopefully extrude the holes in the main bracket like original. So folks can see what goes into the process when you don't have a large stamping press, progressive tooling and an army of engineers and machinists :smile:
The plates that are bolted together will remain this way until all holes are sized correctly to make the 1st extrusion of 2 total. I get these plates at a local shop. Nice to make little fixtures out of. The lasered flat blanks will rest inbetween these plated to extrude the hole.The pin/spring thing is the actual press tool that will form the 1st part of the mounting hole to the correct dimensions. We will build another one like this for extrusion step 2.
The plates that are bolted together will remain this way until all holes are sized correctly to make the 1st extrusion of 2 total. I get these plates at a local shop. Nice to make little fixtures out of. The lasered flat blanks will rest inbetween these plated to extrude the hole.The pin/spring thing is the actual press tool that will form the 1st part of the mounting hole to the correct dimensions. We will build another one like this for extrusion step 2.
