Pocket Bike Forum - Mini Bikes - Reply to Topic
Thread: Turning reeds around...is this a good idea? Reply to Thread
Title:
Message:
Trackback:
Send Trackbacks to (Separate multiple URLs with spaces) :
Post Icons
You may choose an icon for your message from the following list:
 

Register Now



In order to be able to post messages on the Pocket Bike Forum - Mini Bikes forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.

User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in










  Additional Options
Miscellaneous Options

  Topic Review (Newest First)
03-10-2019 11:54 PM
Kimjon
Quote:
Originally Posted by EPR View Post
Great job on the tensioner, sometimes its hard to make them work right.
Thanks, it's my second/third attempt at it.

V1.0 wasn't a bad idea...it just didn't work as well as I was hoping for. This one V1.1 is possibly still a little light on the spring tension, however it's working fantastic...So I'm going to not do my usual and "try fix something that's not broke". If it ever does let me down I'll just increase spring tension then.
03-10-2019 01:18 PM
EPR
Re: Turning reeds around...is this a good idea?

Great job on the tensioner, sometimes its hard to make them work right.
03-09-2019 09:30 PM
Kimjon Today's efforts. I was never happy with the hairpin style spring on my chain tensioner. It was ok, but never great.

Attachment 147119

Attachment 147121

So I added an extension to it and converted it to use a couple coil springs to add the desired tension.

https://youtu.be/fB-zallTgXY


I've just put an entire tank of gas through it and haven't had any issues...I'll call that a success!
03-09-2019 12:31 AM
Kimjon
Quote:
Originally Posted by MrKitty View Post
thats sweet nice work looks a lot better then mine lol
Wow!!! Those pistons have a story to tell, what's the go there?
03-09-2019 12:23 AM
MrKitty thats sweet nice work looks a lot better then mine lol
03-08-2019 06:19 PM
Kimjon Haven't been on here for a while.

I finished that goped. The combination of bigger carb, porting and pipe work well. I'm very happy with the results considering it really didn't cost anything to do.

Attachment 147093

This is my favourite view. Once you've put it together they all look the same😀

Then I made myself a drift trike. Started with a lifan 6.5hp and made a manifold, port matched everything (think you guys call that blueprinting?). Added a much bigger VM26 carburetor and did all the usual stuff like remove governor and oil cut out switches etc... anyway here it is all done:

Attachment 147095

And a quick video:

https://youtu.be/IuNrZGgkXVI

And then I've started a new one for a mate MITCH as the license plate says.

Attachment 147097

Waiting on delivery of a few small parts to finish this trike. That's 12 trikes now and a good enough excuse for another drift trike race. The smack talk has already begun and hopefully it's as much fun as the first time...

https://youtu.be/FRoEchndnRI

Now just gotta read all of your posts to catch up on what's been happening on here....
11-16-2018 01:46 PM
EPR
Re: Turning reeds around...is this a good idea?

Nice work, looks like you got everything covered, go, go, go.
11-15-2018 12:02 PM
Kimjon Sorry I've been a bit distracted lately. I sold a heap of my stuff for a couple reasons:

1) free up some cash, in order to buy other cool things with. Hey it's my version of recycling...though I doubt the planet really benefits<img src="https://www.pocketbikeplanet.com/images/smilies/smile.gif" border="0" alt="" title="Smile" class="inlineimg" />

2) clear out my shed, so I can move on with completing it the way I've always envisaged. This has been stalled for about 5 years...now I can move forwards.

Oh, and I seriously had a crush on this LS1 ute...so I brought it<img src="https://www.pocketbikeplanet.com/images/smilies/smile.gif" border="0" alt="" title="Smile" class="inlineimg" />

Attachment 145773

It's a Holden Ute, which I don't think you guys in the USA get to enjoy. But pretty much like an El Camino...But in Australia they never stopped making them. It's got a 5.7L ls1 motor in it, and as you'd imagine, it weighs next to nothing...especially in the rear end! Think burnouts...Yes!!!!

-- ------ -- -----

Anyways, my goped project is also taking shape. I'll let the pictures do the talking:

Attachment 145779

Attachment 145775

Motor ported using techniques I learnt doing the cag motor. Plus using a few assumptions

Attachment 145777

That's it back from powder costing. I like the black, gold, green metallic mix they used. It really comes to life in the sun.

Attachment 145783

Attachment 145785

Attachment 145787

Exhaust mocked up. And overall I think it's coming together nicely for something that doesn't owe me much money.
10-23-2018 01:31 PM
Kimjon
Quote:
Originally Posted by EPR View Post
Try 95 then 98, which is best. In California 91 is all I can find, from a normal gas station. In summer they add 20% alcohol to make things worse for china made stuff. I used AMSoil octane booster & Sta-Bil gas additive to keep the fuel and its additives, ( alcohol ) and more from separating.
Thanks EPR. I looked an OMB website last night. They make anything and everything you could ever dream of for these motors...but very expensive.

Then I thought about all the KT100 kart motors that owners are ditching for the rotax125 instead. These KT's are going cheap (about $150US) here in NZ. So I'm going to look into these. I may be able to make/adapt a rotax 125 centrifugal clutch and starter onto the KT? Something to look into anyway.
10-22-2018 02:05 PM
EPR
Re: Turning reeds around...is this a good idea?

Try 95 then 98, which is best. In California 91 is all I can find, from a normal gas station. In summer they add 20% alcohol to make things worse for china made stuff. I used AMSoil octane booster & Sta-Bil gas additive to keep the fuel and its additives, ( alcohol ) and more from separating.
10-22-2018 04:47 AM
Kimjon Nice toys!

What are the basics of getting more power on pump gas (we have 91,95 & 98 octane here)?

I'm just looking for an edge over the stock motors with basic carb, governor and exhaust mods done.
10-21-2018 10:12 PM
CAM2
Re: Turning reeds around...is this a good idea?

Quote:
Originally Posted by Kimjon View Post

I'm now keen to explore these GX200 motors a little more to see what I can get out of them.
You can get quite a bit out of them....The turbocharged 6.5hp custom bobber I built was pumped up on methanol and pushing close to 25hp under full boost.........It went 81mph too..

If youre thinking about what the lil GX200 would do imagine what this heavily modded 13hp puts down on the copper colored drag bike........LOL

I have so many projects its disturbing....The red single seater cage kart had a 6.5 w/TAV w/e-start....It now has a modified 13hp OHV w/TAV plus e-start in it aswell ....Its so wickedly powerful it feels like your neck is trying to be seperated from your spinal column.....LOL


The race kart to the right of the cagekart under the flowerpots and other junk is one day destined to be paired up with my 1993 Ninja 250 engine..........Its halfway there,,,,,,,LOL\

I even have a two seater w/6.5 and TAV...One day its getting an alky modified 15hp flattop briggs..


Even the oldschool flattop briggs are no jokes when modified right....
10-21-2018 05:42 PM
Kimjon Got a fair bit done this morning.

Attachment 145367

Attachment 145369

Attachment 145371

I ordered some parts via ebay. Now just gotta wait the 6 weeks for delivery. So I'll flip over to the other projects I'm working on whIle waiting for these parts to arrive.
10-21-2018 02:46 PM
Kimjon
Quote:
Originally Posted by EPR View Post
Nice power jet carb, I have a few here for my 4 stroke bikes. Love that intake tube.
Thanks EPR.

I watched some ghetto youtube channel and apart from me struggling to understand the language...I was totally impressed with the small engines pushing those mini bikes along at breakneck speed!

I'm now keen to explore these GX200 motors a little more to see what I can get out of them.
10-21-2018 12:00 PM
EPR
Re: Turning reeds around...is this a good idea?

Nice power jet carb, I have a few here for my 4 stroke bikes. Love that intake tube.
10-21-2018 02:01 AM
Kimjon I'm jumping around a lot...got so many projects on the go at the same time.

I'm making a final drift trike...this time for myself. I'm trying an idea of using a much bigger carb on a Honda gx200 motor.

Attachment 145347
Attachment 145349
Attachment 145351
Attachment 145353
Attachment 145355
Attachment 145357

I used JB weld to make the D port match the motors intake.

Attachment 145359

Then fitted it to the motor.

Attachment 145361

Attachment 145363

I'm pretty happy with this so far.
10-19-2018 11:15 PM
Kimjon I dropped wheel size from 10" to 9". What a difference it's made...awesome!

Front wheel keeps wanting to pop up, so much so I actually flipped it unintentionally today. Im now nursing a few grazes and a very sore bum where I landed hard on my back.

Attachment 145343

Anyway. Nothing broken on me and only minor repairs needed to fix the brakes and exhaust. All weldable and I can do that. I'll put it down to the price of education.
10-17-2018 04:06 PM
Kimjon
Quote:
Originally Posted by Chrisi View Post
Yes i know the problem from polini and bzm engines. But there i can down milling the intake round about 5mm.
Thats a good way to compensat the precompression and as shorter the intake as quicker reakt the engine.

When you can make your owne crankstuffer it is the best way on your engine i think.
Ah yes, I see what you've done there, makes sense.

I'll have a think about it and hopefully after some absorption time an idea will come to mind.
10-17-2018 02:31 PM
Chrisi Yes i know the problem from polini and bzm engines. But there i can down milling the intake round about 5mm.
Thats a good way to compensat the precompression and as shorter the intake as quicker reakt the engine.

When you can make your owne crankstuffer it is the best way on your engine i think.
10-17-2018 01:35 PM
Kimjon
Quote:
Originally Posted by Chrisi View Post
how do you want to balance the pre-compaction?
There is much more space in the crankhousing now.
I was going to run it like this first to try it. The actual volume change will be minimal.

However I do have a plan B. You can buy a specific case stuffer that lines the case to reduce volume. I'll look into either buying one or possibly making one of these if that does become an issue.

Have you had experience with this causing problems yourself? What solution did you end up using? Photos always help.

Many thanks
Kimjon
This thread has more than 20 replies. Click here to review the whole thread.

Posting Rules  
You may not post new threads
You may post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

 
For the best viewing experience please update your browser to Google Chrome