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Forum: Good Deals! 07-18-2019, 02:52 AM
Replies: 13
Views: 344
Posted By bob58o
Backfire with belt drive and the belt slips. ...

Backfire with belt drive and the belt slips.
What happens with a backfire and a chain driven draw through supercharger?
Does it blow up?
Forum: Engines & Clutches 07-17-2019, 12:46 AM
Replies: 11
Views: 205
Posted By bob58o
26 lb springs are the heaviest you can install in...

26 lb springs are the heaviest you can install in a Hemi without cutting the spring pockets, but they are certainly not the only ones you can install. You can install trick 10.8 lb springs, 22 lb...
Forum: Go Kart Discussion 07-16-2019, 01:55 PM
Replies: 22
Views: 225
Posted By bob58o
I forgot to mention that I did replace the driver...

I forgot to mention that I did replace the driver internals (weights & springs) with comet parts. I have it set for 4k rpm engagement. So it isn’t really a $50 TC anymore.

Good luck with...
Forum: Engines & Clutches 07-16-2019, 02:28 AM
Replies: 11
Views: 205
Posted By bob58o
Make sure the 18lb springs you get specifically...

Make sure the 18lb springs you get specifically say for Hemi Predators. The Honda / clone 18lb springs won’t fit in the Hemi. They’ll coil bind and you will break stuff.
Forum: Go Kart Discussion 07-16-2019, 01:41 AM
Replies: 22
Views: 225
Posted By bob58o
I’m still on the original belt, but I don’t have...

I’m still on the original belt, but I don’t have more than a few hours on it (<5 hours probably). I moved and don’t really have the real estate to ride it, plus my drivers license is suspended at the...
Forum: Go Kart Discussion 07-16-2019, 12:05 AM
Replies: 22
Views: 225
Posted By bob58o
By the way, I run a $50 eBay 30 series on my...

By the way, I run a $50 eBay 30 series on my minibike that turns over 8k rpm. I did replace the the 6 driven with a 7 driven unit.

Cam has 0.285 lift and 250 degree duration.
28.5mm / 25mm...
Forum: Go Kart Discussion 07-15-2019, 11:11 PM
Replies: 22
Views: 225
Posted By bob58o
This is what I was talking about... If you cut...

This is what I was talking about...
If you cut this stepped key shorter and keep it close to the engine on the PTO, you still might have to grind away some of the key cast into the driver.
Forum: Go Kart Discussion 07-15-2019, 04:49 PM
Replies: 22
Views: 225
Posted By bob58o
I meant driver unit. All of the knockoff 40...

I meant driver unit.
All of the knockoff 40 series drivers have the key built it.
Not sure about genuine comet.

I got mine from eBay for $98, but it looks like they are $82 now....
Forum: Go Kart Discussion 07-15-2019, 02:27 PM
Replies: 22
Views: 225
Posted By bob58o
Ive always wondered about those shaft adapters....

Ive always wondered about those shaft adapters. You talking about the one with the stepped key?
My 40 series driven unit has the key built in, so I guess youd have to grind part of the built in...
Forum: Engines & Clutches 07-12-2019, 02:12 PM
Replies: 8
Views: 76
Posted By bob58o
> = greater than < = less than

> = greater than
< = less than
Forum: Good Deals! 07-04-2019, 10:37 PM
Replies: 17
Views: 306
Posted By bob58o
Better keep it at 87mph or less just to be safe.

Better keep it at 87mph or less just to be safe.
Forum: Go Kart Discussion 07-01-2019, 08:32 PM
Replies: 44
Views: 502
Posted By bob58o
It’s just strange. I’ve never heard of the rod...

It’s just strange. I’ve never heard of the rod contacting the cam between the lobes.
Forum: Go Kart Discussion 07-01-2019, 01:00 PM
Replies: 44
Views: 502
Posted By bob58o
I recently read on a FB group that Russel no...

I recently read on a FB group that Russel no longer owns/runs NR racing. I’m not sure this is true. He was the only person I ever spoke to when I dealt with NR and since now they have at least two...
Forum: Go Kart Discussion 07-01-2019, 11:56 AM
Replies: 44
Views: 502
Posted By bob58o
I’d call dynocams first. It’s their camshaft. Ask...

I’d call dynocams first. It’s their camshaft. Ask for measurement specs for the area in question (where the rod is hitting).
Forum: Go Kart Discussion 06-30-2019, 01:40 AM
Replies: 15
Views: 290
Posted By bob58o
How to remove ethanol from gas

Saw this video and thought Id share.
I have no idea how effective this method is but it seems brilliantly simple.

Mix water and gas.
Allow ethanol to bind with water.
Remove the layer of...
Forum: Good Deals! 06-29-2019, 01:25 AM
Replies: 12
Views: 234
Posted By bob58o
15% off a $120 212cc is still a few bucks more...

15% off a $120 212cc is still a few bucks more than the $99 or $97 sale/coupon prices you can usually find. But still cool for the other brands/products.
Forum: Go Kart Discussion 06-25-2019, 09:00 AM
Replies: 27
Views: 456
Posted By bob58o
Predator has 70mm bore x 55mm stroke. 70mm...

Predator has 70mm bore x 55mm stroke.
70mm gasket diameter.
0 deck height.
0 piston done volume.
Forum: Go Kart Discussion 06-24-2019, 11:25 PM
Replies: 27
Views: 456
Posted By bob58o
I just ran some numbers through the compression...

I just ran some numbers through the compression ratio calculator I use.

Flat top piston flush with the deck, 0.027” gasket, and a 22cc chamber = 9.6 :1 compression ratio.

IIRC, milling 0.040”...
Forum: Go Kart Discussion 06-24-2019, 04:29 PM
Replies: 27
Views: 456
Posted By bob58o
About to walk into work so this will be brief. ...

About to walk into work so this will be brief.
If you are 20 in the hole now, a +0.040” rod with the 0.550” flat top piston will put you flush. The dished piston you have had a compression height of...
Forum: Go Kart Discussion 06-23-2019, 02:12 PM
Replies: 27
Views: 456
Posted By bob58o
I thought the non Hemis came with thin gaskets...

I thought the non Hemis came with thin gaskets (0.009” - 0.010”). It is the Hemi that comes with 0.042-0.045” gaskets. And it is also the Hemi that comes 0.020 - 0.025” in the hole. The non hemi is...
Forum: Good Deals! 06-22-2019, 12:34 AM
Replies: 13
Views: 344
Posted By bob58o
No idea on the amount of HP it would consume. But...

No idea on the amount of HP it would consume. But a 1:1 ratio would theoretically make 27 pounds of boost on a 212. So I’m guessing it would most likely be underdriven. If underdriven 2 :1 so the...
Forum: Engines & Clutches 06-17-2019, 05:57 PM
Replies: 23
Views: 499
Posted By bob58o
IIRC, I got my 420cc for $185 free shipping....

IIRC, I got my 420cc for $185 free shipping. Nobody heard of Powerland at that time.
You can still find good deals from Powerland Auctions from time to time. I guess the difference is that their...
Forum: Good Deals! 06-17-2019, 05:48 PM
Replies: 13
Views: 344
Posted By bob58o
AMR 300 Supercharger

This went way up in price for a while. I got called a Richard on FB for posting this when I seen somebody selling theirs for $300.

$207 with free shipping is the cheapest Ive seen for a while....
Forum: Go Kart Discussion 06-17-2019, 05:40 PM
Replies: 14
Views: 269
Posted By bob58o
Torque spec? Just kidding. I use the impact...

Torque spec?
Just kidding. I use the impact gun, but that is probably not advised with Chinese made cast Flywheels.
Forum: Go Kart Discussion 06-17-2019, 05:37 PM
Replies: 179
Views: 5,935
Posted By bob58o
Speaking of talented people on FB groups... Ever...

Speaking of talented people on FB groups... Ever seen Sneaks’ (Gary C’s) pipe bomb? What is that thing? Some kind of oil separator?
Showing results 1 to 25 of 500

 

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