Author Topic: Redmax 621  (Read 3945 times)

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Offline Cut4fun .

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Re: Redmax 621
« Reply #40 on: September 02, 2015, 01:00:03 pm »
Found this weight 12.5lbs on redmax power equipment link.  http://www.redmax.com/files/Zenoah/RedMax/catalog.pdf

G621AVS 62.0 3.8 2-Stroke 4.1 12.5lb

redmax 621 G621AVS  IPL http://www.redmax.com/ddoc/RMXI/RMXI2008_USen/RMXI2008_USen_G621AVS_SN642078%20and%20up.pdf
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Online Chris-PA

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Re: Redmax 621
« Reply #41 on: September 02, 2015, 06:37:58 pm »
Yes, given the numbers on Acre's site I had no idea what to expect.  I weighed it on the digital scale at work when it came in, and was very happy with 12.4lb PHO.  There are few 62cc saws that can match that.  I really like using it. 

Offline nenicu

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Re: Redmax 621
« Reply #42 on: September 22, 2015, 03:19:42 am »
 The 72 cc clone carb seems to have the same venturi like the Redmax carb  15,8-16 mm. I'm  now looking to install a H 372 carb[China]. It needs boring theintake manifold and filter holder. A little hole to hook-up the accel rod and an external pulse.

Offline nenicu

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Re: Redmax 621
« Reply #43 on: September 22, 2015, 03:56:42 am »
 Redmax

Offline nenicu

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Re: Redmax 621
« Reply #44 on: September 22, 2015, 03:58:48 am »
Second

Online Chris-PA

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Re: Redmax 621
« Reply #45 on: September 23, 2015, 08:18:43 pm »
Is that Chinese carb based on an HDA?  How large is the venturi?

I keep thinking about adapting a larger carb but the darn thing runs so nice as it is I'm having a hard time justifying the effort.  I guess there is such a thing as "good enough"!

Offline nenicu

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Re: Redmax 621
« Reply #46 on: September 24, 2015, 02:14:59 am »
 The carb is for a Husqvarna 372. Comparing by eye only the venturi is larger[18-18,5]. The  original Walbro HD 12 venturi is 17,46. I think the chinese is larger.

Offline nenicu

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Re: Redmax 621
« Reply #47 on: September 25, 2015, 04:44:49 pm »
The rest is on Arboristsite.

Online Chris-PA

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Re: Redmax 621
« Reply #48 on: September 26, 2015, 10:16:51 am »
The rest is on Arboristsite.

I left you a message over there but I stopped posting on AS. 

I'm wondering if something like an HDA-164 would be easier to mod?  It's larger than the stock carb and has linkages in the same location, but it requires an impulse tube through the top cover which won't fit well.

Offline nenicu

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Re: Redmax 621
« Reply #49 on: September 27, 2015, 03:21:50 am »
 Greencut gs 7200. The original carb setup was a exact replica of a Redmax g 621, even the venturi size[15,08]. This is small for 60 cc, for 70 cc is smaller. So whats in the pictures is my doing. I drilled a hole in the case for a impulse port, made a new trottle rod [modified from 50 cc Zenoah clone], enlarged a bit the intake  block and filter  holder.The carb is a chinese carb for Husky 365-372.I had to drill a hole for the trottle rod on the right side . I now have fast idle on the choke button.

 

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